#include <GL/glut.h> 
 
void init (void)  
{ 
      /* ??????????????? OpenGL ?????????????????  */ 
} 
void display(void) 
{ 
  /* ??????????????? OpenGL ??????????????? */       
} 
 
int main(int argc, char** argv) 
{ 
    glutInit(&argc, argv); 
    glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB); 
    glutInitWindowSize (250, 250);  
    glutInitWindowPosition (100, 100); 
    glutCreateWindow ("hello"); 
    init (); 
    glutDisplayFunc(display);  
    glutMainLoop(); 
    return 0;    
} 
